While it's true that no documented effect and/or evidence has been shown about water and it clearing up skin I thought I'd copy something from my chemistry textbook about their opinion on Water and the skin.
I am typing this out!
thanks for the information on the water thing, LetThemEatCake! I should be drinking 8 glasses of water daily and I usually don't drink more than 5... I mean the actual water, not coffee/tea, juices, fizzy drinks etc. Also I've heard that if you have 1 coffee you should have 2 extra glasses of water after it to minimize it's bad effect